diff --git a/autoload/airline/init.vim b/autoload/airline/init.vim
index 744e12f2..90d05aa6 100644
--- a/autoload/airline/init.vim
+++ b/autoload/airline/init.vim
@@ -128,6 +128,7 @@ function! airline#init#bootstrap()
           \ 'branch': '',
           \ 'notexists': '?',
           \ 'crypt': 'cr',
+          \ 'dirty': '!',
           \ }, 'keep')
   endif